You can see that just before the move to sell LTC for BTC on friday there was little volume needed to push the ltc/btc price down. I marked the history line for you in this image
For those attempting to understand the charts.
Right side is each exchange 2 hr volume you can see the tome at the top LAST 2H 0M
What was sold and bought and total.
Top is the history price green line of btc and ltc on bitfinex. The individual blocks are different exchange and currency pairs.
Blue line on the right is asks. Yellow line is bid. Green line is price history. Grey lines represent history lines you can see if people are placing bids and taking them down. I have it set to 5 mins. So if a bit stays then if its pulled it will remain as a grey line after 5 mins.
The purple lines is my target alarms. The left red vertical line is the low trade point and the right green vertical line is the high trade point.
If i select any green and link the different exchanges it will tell me what the volume ASK BID was at that time.